Beam lock for looms



July 19, 1932.

H. N. SMITH BEAM LOOK FOR LOOMS Filed March so, 1951 2 Sheets-Sheet 1 INVENTOR Patented July 19, V

UNITED STATES PA EN was HENRY N. SMITH, or HorEnALE; MASSACHUSETTS, ASSIGNOR mo DRAPER conronn-" TION, or HorEDALE, MASSACHUSETTS, A conrona'rron on MAINE BEAmi nook For. Looms Application filed. March 30.1931. Serial na szaiss.

This invention .relates. to beam locks for looms and is particularly directed to a simple and effective meansreadi'ly operable to lock and unlock the beam inlits bearings.

When the warp beam is supplied with yarn and is supported in its bearings there is not only. considerablegwear on the jour nals or gudg eons, butthe vibration of the loomis liable at times to disturb the locked condition of the beam so that the latter may jump or give under the-Shedding and beat-up movements of the loom, with the result that imperfect cloth .may bewoven, V I

It is now the common practice to provide beam locks for looms but in most instances the locking mechanismhas been .of a complic'ated nature and in many instances unreliable, and requiring more than asinglemw nipulation of the loom attendant to lock and unlock the beam. j j

One of the objects of the present inven 'tionis to providea beam lock for looms which shall be simple in construction and effective in operation, and readily "manipulated and adjusted to lock the beam in its operating position. v i i -Another feature of the invention consists, in providing a safety catch for holding the locking means in looking position notwithstanding vibrations in the loo m itself. .flThe' invention and novel features thereof will best be made clear from the follo wing description and accompanying drawings of one good practical 'form thereof.

In the drawings r Fig. lis a sideelevationof a loom containingthepresent invent-ion, some of the parts'beingbrokenaway; t

Fig. 2 is a sectional side elevation onthe line 2-2. of Fig. 3showingthe beam lock in vlocked position;

Fig. 3 is a rear view'showingthe beam and I the beam look at each endthereof;

manipulation of the warp beam inlplacing brackets .5 within desired limits.

ingone of the beam locks being moved-into locking position; and

Fig. 5 is an enlarged section on the line 5 5. ofFigQQ. I V It will be understood, of'course, that the beam is provided with. alock at each endthereof; and since such locks maybe of the same general construction one willzbe sufficient.

The vloom frame 1 may be of-usual construction; and above the warp beam it is provided with the usual guides or whip rolls 2 and3, overwhich the warp threads pass to the weaving instrumentalities,

Open journaled bearings are provided at each side atthe rear of the loom for the. support of thej ournals or gudgeons of the warp beam, and as shown in the present instance of the invention suchbearings' are provided on-a bracket 5 which may .be supported inposition on the loom frame by the' securing bolts 6. 1 Y

As shown, the brackets 5 are also provided a description of with additional seats. 7 for facilitating the it inand taking'it out of its locked position.

It may be desirable at'time's to'providefor adjustment of the brackets and tothis end they are each providedfWith slots 8, best .75

shown in Fig. 4, whereby loosening. of the securing bolts 6 may permit adjustment of the The warp beam 9 is provided with the usual j ournals or gudgeons 10", which may bereceived inthe open bearings 4:, as indicated in Fig. 4, andin case the warp beam 9 is to be positively operated it maybe provided with a pinion 11 adjacent one head thereofto ooperate with the usual positive letsofl mechanism, but since these details formj no essennot herein further illustrated and described.

7 In accordancewith'the present invention 1 the beam lock is under the control of asingle no 1 manually operable lockinglever pivotally tial part of the presentinve'ntion they are V connectedto the loom frame or the bracket v5, as shown. "lhelocking lever 12 in the present instance of the invention is pivotally mounted on a stud or pin 13 for pivotal movement thereon, and such stud or pin is eccentrically mounted'on a head portion 14 in the bracket 5. As a convenient means for varying the pivotal point of the locking lever 12 the head portion 14 is provided with a groove 15, by which the combined pin and its head support may be conveniently turnedto vary the position of thepivot' ofthe locking lever.

Pivotally mounted on the locking lever between the ends thereof, as at 16, is the journall' retainer 17 ,the upper portion of which..-

is provided witha rounded seat 18 to'emb'race the journal or gudgeon of the beam and close the open bearing'when the parts are in beam locking position.

The journal retainer l'i has laterallyeir tending portion 19'formingia recess on the front face of the journal retainer'topermit V the pivotal connection16 betweenit and the locking lever to be moved laterally "beyond a line passing through the axis of the beam glidgeon or journal andthe piv'ot 18 of the a locking lever, asiindicated in Fig. 2, the reysultbein'g that when the locking-lever 12 has been moved into locking position- :the pivot 16 will take locking positionjfrontward 1 ofthe-line a.b of Fig. 2, passing through the axis of thebeamgudgeon or journal and thepivot 13 of. the locking lever, thereby effectively locking the parts :in operative positioni f f i .Notwithstanding the locked position of the 7 locking lever and pivot connection-16 between it an dthejournal retainer 17, it mayhappen at times that the vibration of the loom or accidental contact of the locking lever. by

some moving object will causethelock to pass intoan' unlocked position, or at least, release the 'gudgeonor journals of the beam, and to overcome this difiiculty the-present invention contemplates inad dition to the means al-'' ready described, the provision of a sa fety catch whichgshall act. to hold the :parts in their locking position until the catch is'ina tentionally released:

'In' the present instance of, invention be turned about its pivotal support in. a'conera1-c-lockwise direction 'as'shown in said figure, and'if at thistime'the upper portion of 'the j ournal retainer has been: moved over the gudgeon or journal-"of the'beam, 'willbe drawn downwardly as the lockinglever is swung to locking position until'thev pivotal connection 16 between thelocking lever and 1 journal retainer has been moved beyond a line such as a.bof Fig. 2, passing through the axis of the gudgeon or journal and the axis of the pivot 13, the result being that the parts are then locked and no-jumping movement of the warp beam in an upward direction can disturb the locked condition. l

, The safety catch hereinbefore, described is of the automatic gravity type, so that when the locking lever 12 has beenmoved into locking position, as indicated in Fig. 2, the pivotal member 22 of' the safety catch -will dropiaut'omatically into engagement with its cooperatingmember=21 on thelocking le-' .ver; "When the parts are in the positionstated and as 'shown in Fig. 2, the vibration of the loom or any accidental contact of the locking lever. with a moving obj ect wil'l have no effect in disturbing-the locked condition of the beam, because at this: time the safety I catch is operatingandwill prevent any move- 'ment of the10cking lever12. r

In order that the amplitude of movement of v the locking 1e'ver12 shallb'e o r 1ly sucl 1 as to carry the. pivot 16:'beyond the line ab"of v Fig.7 2, the forward face of thejournal retainer 17 is caused to bear upon the hub'por- From the construction. described, it ,will be apparent thatthe beam lock is self-locking when the lockinglever 12 is thrown into lock ing'position, as at this timethe safety catch 195' tion 20 of the locking lever,as indicated in i becomes effective. .Moreover the beam may be freed from its look by manually lifting the.

'pivotedmember 22 of the safety catch, there;

by permitting the locking lever 12 to bemoved to runlockingposition. i 1 j V -During weavmg there will necessarily be some-wear between thev gudgeons or 10111 nals ofthe beam, and-itsbearingspand should this occur the head ltrof the eccentrically mounted pivot'pin13 may be-t-urnedzby an ordinary screw driver. while the loom continues-to run and thereby all wea'r may be taken up. I r

When the beam has'been unlockedand moved fromthe loom it is desirable that the journalretainershall not project rearwardlyf from the loom in position to be injuredby contact witha moving objectand sothe journal retaineris' provided with an. inclined shoulder 24, which may engage areversely inclined surface on the journal bearingwhen the beam is. out, so that while the partsmay not be moved into locking position ashereinbefore described the journal retainer may be held inconvenient position out ofithe path of any moving objects at the rear ofthelo om;

" What is claimedis A beam lock for looms, comprisinganfopen I journal bearing, aj ournal retainerlfor closing. 7 1

the bearing, a manually operable lever pivotally connected to the loom frame, a pivotal connection between the journal retainer and said lever at a point between the ends of'the lever so that when the lever is turned about its pivotal support it will draw the journal retainer lengthwise to close the open bearing and move the pivotal connection into locking position, and a safety catch, the, members of which are mounted one on the lever and'the other on the journal retainer to hold the parts in ournal locking position.

In testimony whereof, I have signed my name to this specification.

, HENRY N. SMITH. 

